forked from AuroraMiddleware/gtk
e9e373913e
ngl supports all the same platforms as gl now, and has seen more improvements in the last cycle.
182 lines
4.4 KiB
C
182 lines
4.4 KiB
C
#include "config.h"
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#include "gskglprofilerprivate.h"
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#include <epoxy/gl.h>
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#define N_QUERIES 4
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struct _GskGLProfiler
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{
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GObject parent_instance;
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GdkGLContext *gl_context;
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/* Creating GL queries is kind of expensive, so we pay the
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* price upfront and create a circular buffer of queries
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*/
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GLuint gl_queries[N_QUERIES];
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GLuint active_query;
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gboolean has_queries : 1;
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gboolean has_timer : 1;
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gboolean first_frame : 1;
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};
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enum {
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PROP_GL_CONTEXT = 1,
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N_PROPERTIES
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};
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static GParamSpec *gsk_gl_profiler_properties[N_PROPERTIES];
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G_DEFINE_TYPE (GskGLProfiler, gsk_gl_profiler, G_TYPE_OBJECT)
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static void
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gsk_gl_profiler_finalize (GObject *gobject)
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{
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GskGLProfiler *self = GSK_GL_PROFILER (gobject);
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if (self->has_queries)
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glDeleteQueries (N_QUERIES, self->gl_queries);
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g_clear_object (&self->gl_context);
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G_OBJECT_CLASS (gsk_gl_profiler_parent_class)->finalize (gobject);
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}
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static void
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gsk_gl_profiler_set_property (GObject *gobject,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GskGLProfiler *self = GSK_GL_PROFILER (gobject);
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switch (prop_id)
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{
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case PROP_GL_CONTEXT:
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self->gl_context = g_value_dup_object (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
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}
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}
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static void
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gsk_gl_profiler_get_property (GObject *gobject,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GskGLProfiler *self = GSK_GL_PROFILER (gobject);
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switch (prop_id)
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{
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case PROP_GL_CONTEXT:
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g_value_set_object (value, self->gl_context);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
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}
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}
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static void
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gsk_gl_profiler_class_init (GskGLProfilerClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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gobject_class->set_property = gsk_gl_profiler_set_property;
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gobject_class->get_property = gsk_gl_profiler_get_property;
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gobject_class->finalize = gsk_gl_profiler_finalize;
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gsk_gl_profiler_properties[PROP_GL_CONTEXT] =
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g_param_spec_object ("gl-context",
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"GL Context",
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"The GdkGLContext used by the GL profiler",
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GDK_TYPE_GL_CONTEXT,
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G_PARAM_READWRITE |
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G_PARAM_CONSTRUCT_ONLY |
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G_PARAM_STATIC_STRINGS);
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g_object_class_install_properties (gobject_class, N_PROPERTIES, gsk_gl_profiler_properties);
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}
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static void
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gsk_gl_profiler_init (GskGLProfiler *self)
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{
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self->has_queries = epoxy_is_desktop_gl();
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self->has_timer = epoxy_is_desktop_gl() && (epoxy_gl_version () >= 33 || epoxy_has_gl_extension ("GL_ARB_timer_query"));
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if (!self->has_queries)
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return;
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glGenQueries (N_QUERIES, self->gl_queries);
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self->first_frame = TRUE;
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}
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GskGLProfiler *
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gsk_gl_profiler_new (GdkGLContext *context)
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{
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g_return_val_if_fail (GDK_IS_GL_CONTEXT (context), NULL);
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return g_object_new (GSK_TYPE_GL_PROFILER, "gl-context", context, NULL);
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}
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void
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gsk_gl_profiler_begin_gpu_region (GskGLProfiler *profiler)
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{
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GLuint query_id;
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g_return_if_fail (GSK_IS_GL_PROFILER (profiler));
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if (!profiler->has_timer || !profiler->has_queries)
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return;
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query_id = profiler->gl_queries[profiler->active_query];
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glBeginQuery (GL_TIME_ELAPSED, query_id);
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}
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guint64
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gsk_gl_profiler_end_gpu_region (GskGLProfiler *profiler)
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{
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GLuint last_query_id;
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GLint res;
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GLuint64 elapsed;
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g_return_val_if_fail (GSK_IS_GL_PROFILER (profiler), 0);
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if (!profiler->has_timer || !profiler->has_queries)
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return 0;
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glEndQuery (GL_TIME_ELAPSED);
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if (profiler->active_query == 0)
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last_query_id = N_QUERIES - 1;
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else
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last_query_id = profiler->active_query - 1;
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/* Advance iterator */
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profiler->active_query += 1;
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if (profiler->active_query == N_QUERIES)
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profiler->active_query = 0;
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/* If this is the first frame we already have a result */
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if (profiler->first_frame)
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{
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profiler->first_frame = FALSE;
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return 0;
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}
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glGetQueryObjectiv (profiler->gl_queries[last_query_id], GL_QUERY_RESULT_AVAILABLE, &res);
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if (res == 1)
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glGetQueryObjectui64v (profiler->gl_queries[last_query_id], GL_QUERY_RESULT, &elapsed);
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else
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elapsed = 0;
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return elapsed / 1000; /* Convert to usec to match other profiler APIs */
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}
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